Multifunction point of sale system

ABSTRACT

A point of sale system capable of operating in an indicia-reading mode or a verification mode is disclosed. In the indicia-reading mode, the point of sale system configures its illumination, imaging, and processing to read indicia as part of a normal checkout process. If triggered by a user or by an event, the point of sale system may operate in a verification mode. In the verification mode, the point of sale system enables the necessary illumination, imaging, and processing to verify an item. This verification includes illuminating the item in a way that causes a noticeable response from a security mark (or marks) on the item. An image of the response may be captured and processed to authenticate/verify the item. The point of sale system may then respond to the verification and/or may store the image/results as a record of the verification.

CROSS-REFERENCE TO RELATED APPLICATION

The present application claims the benefit of U.S. patent application Ser. No. 14/662,922 for a Multifunction Point of Sale System filed Mar. 19, 2015 (and published Oct. 8, 2015 as U.S. Patent Publication No. 2015/0287290), now U.S. Pat. No. 9,412,242, which claims the benefit of U.S. Patent No. 61/975,241 for an Indicia Reader Having Authentication Capabilities filed Apr. 4, 2014. Each of the foregoing patent applications, patent publication, and patent is hereby incorporated by reference in its entirety.

FIELD OF THE INVENTION

The present invention relates to the field of point of sale systems and, more specifically, to a point of sale system with both indicia reading and verification capabilities.

BACKGROUND

Point of sale systems are used at checkout to tally items for payment, to process a payment, and to update a store's inventory. These systems have computing capabilities and often use multiple data-collection devices. These data-collection devices are typically added as peripherals to a host-computing device. Space to accommodate these data-collection devices may become an issue when too many devices are added to the checkout area. It is, therefore, desirable to combine the functionality of these devices whenever possible.

One data-collection device is the indicia reader (i.e., barcode scanner). Indicia readers are available in multiple varieties (e.g., scanning, imaging, etc.), and are commonly found at a retail store's point of sale (i.e., checkout). Well known among the varieties of indicia readers are fixed mount and handheld indicia readers. These indicia readers can conveniently scan a variety of indicia types (e.g., barcodes) to obtain product information for use during the checkout process.

Besides barcodes, other information is often required at checkout. During payment, for example, the signature on a credit card may be visually inspected to verify the card's ownership. Sometimes, items require a customer to present some additional information for legal or security reasons. For example, a customer purchasing alcohol may be required to present proof of age (e.g., a driver's license). In another example, a driver's license may be used to verify a credit card.

Unfortunately, sometimes the items presented at checkout may not be valid or authentic. Extra scrutiny and record keeping is increasingly required to prevent loss and/or liability. Failing to detect counterfeit or invalid items and/or create a record of verification could result in fines and/or loss.

Invisible security marks are often printed or affixed to an item for verification purposes. These insecurity marks may be detected and/or decoded by using some specialized process/device. For example, security marks printed using invisible ink may fluoresce visibly under special illumination.

Many of these verification processes take extra time and utilize special equipment. The special equipment may require extra space at checkout, which is not always available. The extra time required for checkout may annoy both the customer and the merchant. What is more, overt security processes may bother some customers and may tip-off violators.

Therefore, a need exists for an indicia reader that can read indicia (e.g., barcodes) and record, authenticate, validate, and/or verify items at checkout. The need further exists for this indicia reader to perform these security checks in a way that is convenient, that does not significantly slow processing time, and that is discreet.

SUMMARY

Accordingly, in one aspect, the present invention embraces a point-of-sale system. The point of sale system includes an illumination subsystem configured to illuminate an item with radiation from a light source in order to facilitate imaging. The point of sale system also includes an imaging subsystem configured to acquire images within a field of view illuminated by the illumination subsystem. An indicia reading subsystem is also included as part of the point of sale system and is configured to decode indicia information from the images acquired by the imaging subsystem. The point of sale further includes a verification subsystem that is configured to verify the item from images acquired by the imaging subsystem and to produce an output corresponding to the verification.

In an exemplary embodiment, the radiation from the point of sale system's illumination subsystem includes visible light radiated at a specific angle with respect to the item.

In another exemplary embodiment, the radiation from the point of sale system's illumination subsystem includes ultraviolet light.

In another exemplary embodiment, the radiation from the point of sale system's illumination subsystem includes infrared (IR) light.

In another exemplary embodiment, the point of sale system's imaging subsystem includes a sensor for detecting visible light.

In another exemplary embodiment, the point of sale system's imaging subsystem includes a sensor for detecting ultraviolet (UV) light.

In another exemplary embodiment, the point of sale system's imaging subsystem includes a sensor for detecting infrared (IR) light.

In another exemplary embodiment, the point of sale system's imaging subsystem includes a sensor configured to detect infrared (IR), visible (VIS), and ultraviolet (UV) light.

In another exemplary embodiment, the point-of-sale system's verification subsystem verifies the item by sensing a response to the illumination subsystem's radiation or by sensing that there has been no response to the illumination subsystem's radiation. In some exemplary embodiments, the response to the radiation includes the appearance of a security mark on the item. In an exemplary embodiment, this security mark may include ultraviolet fluorescent ink, while in another exemplary embodiment the security mark may include a hologram.

In another exemplary embodiment, the point of sale system includes a computer readable memory to store the output of the verification subsystem.

In another exemplary embodiment, the output of the point of sale system's verification system is an image, while in another exemplary embodiment the output is an alert to the user.

In another exemplary embodiment, point of sale's subsystems are embodied in a handheld scanner.

In another aspect, the present invention embraces a point of sale system capable of operating in either (i) an indicia-reading mode or (ii) a verification mode. The point of sale system includes an illumination subsystem, an imaging subsystem, an indicia-reading subsystem, and a verification subsystem. The illumination subsystem is configured to illuminate an item with radiation from a light source. The imaging subsystem is configured to acquire images within a field of view illuminated by the illumination subsystem. When the point of sale system is in the indicia-reading mode, the indicia-reading subsystem is configured to decode indicia information from the images acquired by the imaging subsystem. When the point of sale system is in the verification mode, the verification subsystem is configured to verify the item from images acquired by the imaging subsystem.

In an exemplary embodiment, the point of sale system's verification mode is activated by a user.

In another exemplary embodiment, the point of sale system's verification mode is activated when a particular indicium is decoded by the indicia-reading subsystem.

In another aspect, the present invention embraces a point of sale system capable of operating in either (i) an indicia-reading mode activated by default or (ii) a verification mode activated when an authentication criterion is met. The point of sale system includes an illumination subsystem, an imaging subsystem, an indicia-reading subsystem, and a verification subsystem. The illumination subsystem is configured to illuminate an item with radiation from a light source. The imaging subsystem is configured to acquire images within a field of view illuminated by the illumination subsystem. When the point of sale system is in the indicia-reading mode, the indicia-reading subsystem is configured to decode indicia information from the images acquired by the imaging subsystem. When the point of sale system is in the verification mode, the verification subsystem is configured to verify the item from images acquired by the imaging subsystem and to produce an output corresponding to the verification.

In an exemplary embodiment, the authentication criterion includes a transaction requiring a customer's credentials.

In another exemplary embodiment, the authentication criterion includes a transaction using currency above a certain denomination.

In another exemplary embodiment, the authentication criterion includes a transaction using a credit card or debit card.

In another exemplary embodiment, the authentication criterion includes a transaction using near field communication or a smartphone payment service.

The foregoing illustrative summary, as well as other exemplary objectives and/or advantages of the invention, and the manner in which the same are accomplished, are further explained within the following detailed description.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a flowchart depicting the checkout process according to an embodiment of the present invention.

FIG. 2 is a flowchart further depicting the process-items process according to an embodiment of the present invention.

FIG. 3 is a flowchart further depicting the verification process according to an embodiment of the present invention.

FIG. 4 is a flowchart further depicting the financial-transaction process according to an embodiment of the present invention.

FIG. 5 graphically depicts a perspective view of a handheld scanner configured for verification according to an embodiment of the present invention.

FIG. 6 schematically depicts a block diagram of a point of sale system in an exemplary operating environment according to an embodiment of the present invention.

DETAILED DESCRIPTION

The present invention embraces a point of sale system that may operate as both an indicia reader (i.e., barcode scanner) or as a verifier of items at checkout.

As shown in FIG. 1 the checkout process 1 may include steps to (i) process items 2 (e.g., scan barcodes, weigh items, etc.) to compute an itemized total, (ii) accept payment (e.g., cash, credit, debit, payment using near field communication or a smartphone payment service, etc.) for the items (i.e., financial transaction 3), and (iii) update the store's inventory (i.e., inventory update 4) to reflect the absence of the sold items. In both the process items 2 step and the financial transaction 3 step, it is sometimes necessary to verify an item or items (e.g., a credit card, a currency note, a driver's license, etc.).

An exemplary method to process items 2 is shown in FIG. 2. A customer that is ready for checkout approaches the point of sale system (i.e., checkout) with items for purchase. The point of sale system typically operates an in indicia-reading mode 10 (i.e., barcode-scanning mode), meaning that the point of sale system's illumination, imaging, and processing have been configured to read indicia. The indicia-reading mode may be the default mode of the point of sale system but may also be activated or switched to from another mode either automatically (e.g., sensing items/customer) or manually (e.g., a cashier sign-on).

A user (e.g., cashier, store attendant, etc.) scans a barcode 11 to produce the barcoded information (e.g., item description, type, price, etc.). The point of sale system may then use this information for verification. For example, the point of sale system may compare the barcoded information to a look-up table stored in a computer readable memory or available via a network connection to determine if verification is necessary for the item. If the barcoded information indicates that the item does not need verification, the system remains in indicia-reading mode and more items may be scanned. If, however, the barcoded information indicates that verification is necessary (e.g., alcohol is purchased), then the point of sale system may start the verification process 20.

Verification 20 may be triggered for many different reasons. In one embodiment, a customer's credentials (e.g., driver's license) require verification prior to purchase. Here, the goal may be to determine the customer's age or to verify the customer is the owner of a credit or debit card. In another embodiment, a currency note (e.g., 100-dollar bill) may need to be authenticated. In still another embodiment, a credit/debit card may need to be authenticated. The verification settings (e.g., illumination, imaging, etc.) may change depending on the item to be verified (i.e., verification type). The different verification settings may be stored in a computer readable memory. The library of different verification settings may be expanded and/or adapted as security marks are added or changed.

An exemplary, verification process 20 is shown in FIG. 3. First, the verification type is determined 21 either automatically (e.g., from barcoded information) or manually (e.g., cashier input). The point of sale system then configures the illumination, imaging, and processing (e.g., algorithms, software, etc.) to facilitate verification of the item. In other words, the point of sale system is placed in verification mode 22.

At this point, the item for verification is illuminated and imaged by the point of sale system. In an exemplary embodiment, the customer places the item (e.g., a driver's license) on a customer-facing transparent plate to hold the item for illumination and imaging. The item is illuminated by a light source in an illumination subsystem. The light source is configured to illuminate the item for imaging and/or to illicit some response to the illumination. The response to the illumination may include the appearance (or lack of appearance) of a security mark on the item.

There are numerous types and styles of security marks. Security marks make items hard to counterfeit. Typically, security marks are invisible without special illumination (e.g., a particular wavelength, a particular angle, etc.). In one embodiment, a security mark may include ultraviolet fluorescent ink that is invisible unless it is illuminated with ultraviolet light. In another embodiment, a security mark may include a hologram that is best view with visible light from a certain angle or may change as the angle of illumination is changed. In still another embodiment, the security mark may include infrared absorbing or reflecting material.

After the item is illuminated and imaged, the image of the item is processed (e.g., feature detection algorithms running on a processor) for a security mark or marks (or lack of thereof) 23. The results of this examination are then compared to a reference library of pass/fail criteria 24 (e.g., size/shape of a security mark in a certain location) stored in a local computer readable memory or available via a network connection. A pass or fail is returned 25 at the conclusion of the verification. In some cases, the image acquired for verification may then be stored 26 in a computer readable memory integrated with the point of sale system or uploaded to a host computer in communication with the point of sale system via either a wired or a wireless network. The storage of the image may provide a merchant with a record of the verification. This record may be useful in a variety of ways. For example, the visual record could help prove a compliance to a standard or help with the prosecution/prevention of crime.

The verification process returns the pass or fail results and the processing of items continues as shown in FIG. 2. If the verification process returns a “pass,” then the point of sale system is returned to indicia-reading mode 27 and more items are scanned if necessary. If the verification process returns a “fail,” (i.e., not pass) then the cashier (or other appropriate personnel) may be alerted 28 (e.g., audible or visual alert). In one possible embodiment, the alert may be a message displayed on a screen to instruct the cashier how to respond. In some cases, this message includes instructions to execute a known protocol or standard operating procedure (SOP) devised by the merchant for these scenarios. The alerts for various verification scenarios may be stored on the point of sale system or on remote device either directly connected or connected via a wired and/or wireless network.

As shown in FIG. 1, when the process items 2 step is complete, the checkout process 1 moves to the financial transaction 3. An exemplary financial transaction process is shown in FIG. 4. Here, two payment methods are illustrated (i.e., credit/debit and cash), however the present invention is not limited to these payment methods. Other payment methods (e.g., check, gift card, coupon, smartphone payment etc.) are within the scope of this invention, as each may require verification.

The financial transaction process 3 begins with the step of calculating the total amount due 27. Here, the customer may choose to pay with a credit/debit card or cash 28. In either case, verification 20 may be required. For example, a credit card may require a proof of ownership or may require proof of authenticity. Cash (e.g., a currency note) may be verified to prove that it is not counterfeit. In either case, the verification process 20 may be executed as shown in FIG. 3 and described previously but with initial conditions and settings suitable for each verification type. If a verification fails then the user receives an alert corresponding to the verification 12,13. If no verification was required or if the item passes verification, then the financial transaction process ends by processing the customer's payment. The checkout process 1 (shown in FIG. 1) then moves to the inventory update 4 step where the purchased items are subtracted from the store inventory to reflect the purchase and the transaction is complete.

An exemplary point of sale system performing verification according to an embodiment of the present invention is shown in FIG. 5. Here, the point of sale system and some (or all) of its subsystems are integrated within a handheld indicia reader 30. In some cases, only the illumination subsystem and imaging subsystem may be integrated within the handheld indicia reader 30. In these cases, the image/signal processing for barcode decoding and/or security mark verification may be performed by a host computing-device communicatively coupled to the handheld indicia reader.

When the verification mode is activated (e.g., by a user pressing the handheld indicia-reader's button), the handheld indicia-reader projects radiation 31 for verification. A user 34 holding the indicia reader 30 may direct the verification radiation 31 towards the item 32. Alternatively, if the indicia reader is in a fixed position (e.g., is resting in a fixed frame), the item 32 may be positioned in front of the radiation 31.

The item 32 for verification shown in FIG. 5 is a driver's license 32. A security mark 33 (e.g., “VALID”) on the driver's license 32 becomes visible when the driver's license is positioned within the field of view of the radiation 31 (i.e., illumination).

The handheld indicia-reader's imaging subsystem is aligned with the illumination system. The imaging subsystem typically has a field of view with an area that is equal to or smaller than the illumination field of view, however in some cases it could be larger. The imaging subsystem captures an image of the driver's license while illuminated in order to capture the security mark's response (or lack of response) to the illumination. This image may be analyzed (i.e., processed) and compared to a reference database (i.e., library) to insure that the security mark is appropriate (e.g., present, in a certain position, of a certain shape/size, etc.).

A block diagram of an exemplary point of sale system 40 is shown in FIG. 6. The point of sale system may be part of a larger checkout system including, but not limited to, cash registers, credit-card readers, and/or computers. All of these devices may be communicatively coupled to exchange information. What is more, these devices may be communicatively coupled to a network (e.g., cloud computing network).

The point of sale system 40 is configured to operate in an indicia-reading mode or a verification mode and as such requires multiple subsystems to be integrated with or communicatively coupled to each other.

As shown in FIG. 6, the point of sale system includes an illumination subsystem 41. The illumination subsystem 41 may include one or more optical radiation (i.e., light) sources to generate illumination for either indicia reading or verification. A typical light source is a light emitting diode (LED); however, other light source types (e.g., lasers, filament, plasma, etc.) could be used as well. The illumination subsystem 41 may use a single light source for each mode of operation. Alternatively, the illumination subsystem 41 may include an array of light sources that are co-directed to improve output power and/or field of view.

The light source in the illumination subsystem 41 may be configured to radiate light in a narrow band of the ultraviolet spectral range (e.g., 300-400 nanometers), the visible spectral range (e.g., 400-750 nanometers), or the infrared spectral range (e.g., the near-infrared range of 750-1100 nanometers). For example, a typical wavelength for visualizing an ultraviolet fluorescent security mark (i.e., watermark) is 365 nanometers. The present invention may also use broadband light sources covering multiple spectral ranges. For example, a white light source and an ultraviolet source could be used to simultaneously illuminate the item and cause a security mark response.

The illumination subsystem 41 may also include filtering (e.g., chromatic, polarization, etc.) to impart the radiation necessary to cause a security mark response (e.g., reflection, emission, or absorption). For example, a switchable filter bank and a broadband source may provide a means to change illumination wavelength to illicit a response from different security features.

The illumination subsystem 41 may also include beam shaping optics (e.g., lens, grating, fiber bundle, etc.) to direct and form the illumination pattern to a field of view. For example, lenses may be used to collimate the light rays to form a homogeneous illumination over the field of view.

As shown in FIG. 6, the point of sale system includes an imaging subsystem 42. The imaging subsystem 42 is designed to capture a digital image of a field of view aligned with the illumination subsystem. To achieve this imaging, the imaging subsystem 42 may include an imaging lens or lenses to form a real image onto a sensor array. Optical filters may also be included to help remove stray light and/or enhance the visibility of a security mark. The sensor may be a color or monochromatic sensor. The sensor may use charge coupled device (CCD) or complementary metal oxide semiconductor (CMOS) technology. For example, a sensor used for indicia reading may be a silicon CCD array, which is sensitive to visible wavelengths.

An indicia-reading subsystem 43 is also part of the point of sale system shown in FIG. 6. The indicia-reading subsystem 48 includes the necessary signal conditioning electronics (e.g., filtering, amplification, etc.) and a processor (e.g., one or more controllers, digital signal processor (DSP), image signal processor, application specific integrated circuit (ASIC), programmable gate array (PGA), and/or programmable logic controller (PLC)) to detect and decode indicia (e.g., one-dimensional (1D) barcodes, two-dimensional (2D) barcodes, color barcodes, etc.). Typically, the indicia-reading subsystem 43 will recognize and decode a universal product code (i.e., UPC) 44 affixed to or printed on an item 32.

The point of sale system 40, shown in FIG. 6, also includes a verification system 45. The verification subsystem 45 includes the necessary signal conditioning electronics (e.g., filtering, amplification, etc.) and a processor (e.g., one or more controllers, digital signal processor (DSP), image signal processor, application specific integrated circuit (ASIC), programmable gate array (PGA), and/or programmable logic controller (PLC)) to detect and verify (e.g., match to a known security mark in a reference library) a security mark. In one possible embodiment of the present invention, the same processor is used for indicia reading and verification. Here, the difference between the subsystems lies in the software (i.e., algorithms) running on the processor.

The point of sale system 40 also includes a computer readable memory 46 (e.g., read only memory (ROM), flash memory, and/or a hard-drive) to store the necessary software, reference libraries, and results for indicia reading and verification.

As shown in FIG. 6, the point of sale system 40 may also include a communication subsystem 47 for transmitting and receiving information to/from a host computing-device 48 and/or storage device. The host computing-device 48 may also be connected to a network 49, thereby allowing the device to transmit or receive data to/from remote locations. The communication subsystem 47 may facilitate a wired or wireless data link using a variety of possible protocols (e.g., IEEE 802.11, including WI-FI®, BLUETOOTH®, CDMA, TDMA, GSM, etc.).

The subsystems in the point of sale system shown in FIG. 6 are electrically connected via a couplers (e.g., wires, conducting traces, etc.), buses, and control lines to form an interconnection subsystem 50. The interconnection system 50 facilitates the operation of the subsystems and interaction there between.

To supplement the present disclosure, this application incorporates entirely by reference the following commonly assigned patents, patent application publications, and patent applications:

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In the specification and/or figures, typical embodiments of the invention have been disclosed. The present invention is not limited to such exemplary embodiments. The use of the term “and/or” includes any and all combinations of one or more of the associated listed items. The figures are schematic representations and so are not necessarily drawn to scale. Unless otherwise noted, specific terms have been used in a generic and descriptive sense and not for purposes of limitation. 

The invention claimed is:
 1. A point of sale system for facilitating a checkout process comprising tallying items for payment, the point of sale system comprising: an illumination subsystem configured to illuminate items with radiation from at least one light source; an imaging subsystem configured to acquire images of items; an indicia-reading subsystem configured to decode indicia information from images acquired by the imaging subsystem; a verification subsystem; wherein the point of sale system is configured to operate in an indicia-reading mode in which the indicia-reading subsystem is configured to decode indicia information from images acquired by the imaging subsystem, so that the decoded indicia information is configured for use in the tallying of the items; and wherein the point of sale system is configured to operate in a verification mode in which: the illumination subsystem is configured to illuminate items with radiation comprising ultraviolet light; and the verification subsystem is configured to verify items from images acquired by the imaging subsystem while the items are illuminated with radiation comprising ultraviolet light and produce an output corresponding to the verification, so that the output is configured to restrict the checkout process when the output is indicative of a failed verification.
 2. The point of sale system according to claim 1, wherein the imaging subsystem comprises: a first sensor for detecting visible light; a second sensor for detecting ultraviolet light; and/or a third sensor for detecting infrared light.
 3. The point of sale system according to claim 1, wherein the imaging subsystem comprises a sensor configured to detect infrared, visible, and ultraviolet light.
 4. The point of sale system according to claim 1, wherein the verification subsystem verifies the item by (i) sensing a response to the radiation or (ii) sensing no response to the radiation.
 5. The point of sale system according to claim 1, wherein the illumination subsystem is configured to adjust the illumination of the items depending on the operating mode.
 6. The point of sale system according to claim 5, wherein: the radiation from the illumination subsystem comprises visible light while the point of sale system is in indicia reading mode; and the radiation from the illumination subsystem comprises infrared light while the point of sale system is in verification mode.
 7. The point of sale system according to claim 1, wherein the point of sale system is configured to automatically change from the indicia-reading mode to the verification mode in response to indicia information decoded by the indicia-reading subsystem.
 8. The point of sale system according to claim 1, wherein the output of the verification subsystem comprises a pass signal or a fail signal, and the point of sale system is configured to automatically change from the verification mode to the indicia-reading mode in response to the output from the verification subsystem being the pass signal.
 9. The point of sale system according to claim 1, wherein the verification mode is activated when a verification requirement is triggered in the checkout process.
 10. The point of sale system according to claim 9, wherein the verification requirement comprises a transaction requiring a proof of age, a transaction using a currency above a certain denomination, a transaction using a credit card or debit card, and/or a transaction using near field communication or a smartphone payment service.
 11. The point of sale system according to claim 1, wherein the output is an audible and/or visual alert to the user.
 12. The point of sale system according to claim 1, wherein the illumination subsystem, the imaging subsystem, the indicia-reading subsystem, and the verification subsystem are embodied in a hand-held scanner.
 13. A point of sale system for facilitating a checkout process comprising tallying items for payment, the point of sale system comprising: an illumination subsystem configured to illuminate items with radiation from at least one light source; an imaging subsystem configured to acquire images of the items illuminated by the illumination subsystem; an indicia-reading subsystem configured to decode indicia information from images acquired by the imaging subsystem; and a verification subsystem; wherein the point of sale system is configured to operate in an indicia-reading mode in which the indicia-reading subsystem is configured to decode indicia information from images acquired by the imaging subsystem, so that the decoded indicia information is configured for use in the tallying of the items; wherein the point of sale system is configured to operate in a verification mode in which: the illumination subsystem is configured to illuminate items with radiation comprising ultraviolet light; and the verification subsystem is configured to verify items from images acquired by the imaging subsystem while the items are illuminated with radiation comprising ultraviolet light and produce an output corresponding to the verification, so that the output is configured to restrict the checkout process when the output is indicative of a failed verification; and wherein the point of sale system is configured to automatically change from the verification mode to the indicia-reading mode in response to the output from the verification subsystem being indicative of a passed verification.
 14. The point of sale system according to claim 13, wherein the verification mode is activated by a user.
 15. The point of sale system according to claim 13, wherein the verification mode is activated when a particular indicium is decoded by the indicia-reading subsystem.
 16. A point of sale system for facilitating a checkout process comprising tallying items for payment, the point of sale system comprising: an illumination subsystem configured to illuminate items with radiation from at least one light source; an imaging subsystem configured to acquire images of the items illuminated by the illumination subsystem; an indicia-reading subsystem configured to decode indicia information from images acquired by the imaging subsystem; and a verification subsystem comprising memory storing a library of verification settings; wherein the point of sale system is configured to operate in an indicia-reading mode in which the indicia-reading subsystem is configured to decode indicia information from images acquired by the imaging subsystem, so that the decoded indicia information is configured for use in the tallying of the items; wherein the point of sale system is configured to operate, based on the verification settings, in a verification mode in which: the illumination subsystem is configured to illuminate items with radiation according to the verification settings; and the verification subsystem is configured to verify items from images acquired by the imaging subsystem while the items are illuminated with radiation and produce an output corresponding to the verification, so that the output is configured to restrict the checkout process when the output is indicative of a failed verification; and wherein the point of sale system is configured to transition from the indicia-reading mode to the verification mode in response to an authentication criterion being met.
 17. The point of sale system according to claim 16, wherein the verification settings comprise illumination settings identifying the type of radiation to be used for verification.
 18. The point of sale system according to claim 16, wherein the verification settings comprise imaging settings identifying the type of light to be sensed for imaging during verification.
 19. The point of sale system according to claim 16, wherein the point of sale system is configured to change verification settings from the library based on an indicia decoded by the indicia-reading subsystem.
 20. The point of sale system according to claim 16, wherein the authentication criterion comprises a transaction requiring a customer's credentials, a transaction using a currency above a certain denomination, a transaction using a credit card or debit card, and/or a transaction using near field communication or a smartphone payment service. 